Troubleshooting; Alarm Messages - Honeywell ICON-343C User Manual

The ICON controller is able to recognize and to signal seven types of alarm
situation. Each alarm type has a corresponding alarm message and actions
that are made by the controller (see Table 5).
The alarm messages are displayed and alternate with the current displayed
value; they are also accompanied by an intermittent audible signal (buzzer).
Once the cause for the alarm has been eliminated, the corresponding alarm
message continues to be displayed and is accompanied by the buzzer.
In case of an 'Alti' alarm , once the cause has been eliminated, it is necessary to
reset both the current time and the various defrost cycle starting times
(parameter 38 – tINE.... tIN1, tIN2,.., tIN6).
When DOWN key is depressed for 5 seconds when in an alarm state, the
acoustic alarm signal is switched off as well as the alarm signal on the display
(provided the reason for the alarm has been cleared).
Alarm
message
ALP1 Interruption or short circuit of the
AIR-OFF probe.
ALP2 Interruption or short circuit of the
evaporator probe.
ALP3 Interruption or short circuit of the
AIR-ON probe.
ALHt The temperature of the conditioned
ambient exceeds SEtP+HtAd (1, 6)
and therefore remains above
SEtP+HtAd for the time set in
parameter 8 (ALdy)
ALLt The temperature of the conditioned
ambient drops below SEtP-LtAd (1,
7) and therefore remains below
SEtP-HtAd for the time set in
parameter 8 (ALdy)
ALti Internal clock failure or clock back-up
battery exhausted or defective.
ALEE Loss of EEPROM data
Cause
Alarm output active
Compressor output according to parameters
COPF, COOn & COOF (26, 27, 28)
Other outputs not modified
Alarm output active
Defrost output as set in parameter 10 (dFCt)
Fan start delay as set in parameter 19
(Fand)
Other outputs not modified
Alarm output active
Other outputs not modified
Alarm output active
Other outputs not modified
Alarm output active
Other outputs not modified
Alarm output active
Defrost output as set in parameters 9,11,10
(dCSt, dFEt or dFCt)
Alarm output active. The instrument
functions with the default parameters given
in Table 4
26
ICON 343C / 363C USER GUIDE

12. TROUBLESHOOTING

12.1. Alarm Messages

Controller intervention
Table 5. Alarm Messages
EN2B-0004UK07 R0304